Panayi, C, Razavi, M orcid.org/0000-0003-4172-2125, Ma, X et al. (1 more author) (2014) Memory-assisted measurement-device-independent quantum key distribution. New Journal of Physics, 16 (4). 043005. ISSN 1367-2630
Abstract
A protocol with the potential of beating the existing distance records for conventional quantum key distribution (QKD) systems is proposed. It borrows ideas from quantum repeaters by using memories in the middle of the link, and that of measurement-device-independent QKD, which only requires optical source equipment at the users end. For certain memories with short access times, our scheme allows a higher repetition rate than that of quantum repeaters with single-mode memories, thereby requiring lower coherence times. By accounting for various sources of nonideality, such as memory decoherence, dark counts, misalignment errors, and background noise, as well as timing issues with memories, we develop a mathematical framework within which we can compare QKD systems with and without memories. In particular, we show that with the state-of-the-art technology for quantum memories, it is potentially possible to devise memory-assisted QKD systems that, at certain distances of practical interest, outperform current QKD implementations.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2014, Author(s). Creative Commons Attribution 3.0 licence. |
Keywords: | Measurement device independent; quantum key distribution; quantum memory; quantum networks; quantum repeaters |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 17 Dec 2014 12:51 |
Last Modified: | 29 Oct 2020 17:03 |
Published Version: | http://dx.doi.org/10.1088/1367-2630/16/4/043005 |
Status: | Published |
Publisher: | Institute of Physics Publishing |
Refereed: | Yes |
Identification Number: | 10.1088/1367-2630/16/4/043005 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:81755 |